This papercraft is a life size Scooter, a wearable, all-purpose computer that Frieza's army uses, from the anime Dragon Ball Z, the paper model is created by Luisifer Chavez-Calderon. The size of finished model is about 130 (H) x 146 (W) x 106 (D) mm.
A scouter appears as a semi-transparent colored monocle that covers the left eye. Though never shown in the series, dual-eye types exist as well. The first scouter to be seen is the one Raditz wears in the first episode of Dragon Ball Z upon his arrival on Earth. The power level is given as a number without any units of measurement. It is shown that the device explodes if one increases his power level by an enormous amount at a rapid pace; though the range of scouters throughout the series has varied. The most frequently seen color is green, though alternate colors of red and blue also exist. The different screen colors can be chosen to fit the peculiarities of different aliens' eyes, or to suit one's tastes. All the scouters are the same in terms of features but, since a variety of different aliens wear them, there are a bunch of different types of attachment parts depending on the position of the ear. Soldiers in Frieza's army can have one made to order to fit their ear.
In the series, a scouter's primary purpose is to calculate the individual power level or ki concentration of biological characters by converting the readings into numbers. It is never explained what units of measure are used to read ki levels; Akira Toriyama simply stated in an interview that it could not be done by conventional means.
Scouters also serve the purpose of gathering information, and for interstellar communication, as seen when Raditz sent Piccolo's description of the Dragon Balls to Nappa and Vegeta, as well as Frieza learning of the existence of the Namekian Dragon Balls from eavesdropping on Vegeta's conversation with Nappa. Vegeta also used his scouter to keep track of the time after he said he and Nappa would give the Z Fighters three hours for Goku to arrive. Scouters can also tell the location of someone, as demonstrated when members of the Galactic Frieza Army use scouters to hunt down enemies.
Some members of Frieza's army, that are too weak to use ki blasts, wear an Arm Cannon that has a wire that connects to their scouter. It is unclear what role the scouter plays in using the Arm Cannon. [Source: wikia]
You can download the papercraft model here: Dragon Ball Z - Life Size Scouter Free Papercraft Download [Box] [Gavitex]